Extraction of fat and oil from raw materials



Patented Mar. 28, 1922.

2 SHEETSSHEYET 1.

i Y \n H. BOLLMANN. EXTRACTION 0F FAT AND OIL FROM RAw MATERIALS.

APPLICATION FILED JUNEZZ 1920- 1,41 1,154.

no nos no one H. BOLLMANN. EXTRACTION 0F FAT AND OIL FROM RAW MATERIALS. I v APPLICATION FILED JUNE 22, I920. 1 ,41 1,1 54, I Patented Mar. 28, 1922.

2 SHEETSSHEET 2- German 1918;

for this th UNITED STATES P ENT' oi-Fica,

To all whom it may concern:

Be it known that I, HERMANN BOLLMANN, a citizen of Hamburg, Hamburg and State of Germany, have invented certain new and inor Relating to the Oil from Raw Materials, (for which I have filed applications in Germany Sept. 17, 1916; y May 29, 1918; Germany Aug. 9,

from which the solvent vapours may be recovered and after condensation may again be Moreover, the heat employed in the proc- Belgium June April 17, 1919; Hungary April 19, 1919;

pril 25, 1919;

a April 18, 1919; tzerland Apr. 17, 1919; Czechor1l 28, 1919,) of which the fole solvent is conveyed by Way of piping y through separate closed recepes containing the raw material. also been proposed in sweating out, of melting substances from raw material with the aid of heated air, to convey this in open receptacles into a closed ap aratus in opposition to the air current.

n contra-distinction to these known methods, the present invention consists in conveying the raw batches in receptacles provided with sieve- HER-MANN BOLLMANN, 0F HAMBURG, GEEK ANY.

EXTRACTION OF FAT AND OIL FROM RAW Specification of Letters Patent. Application nieuune'zz, 1920. Serial No.

Germany, residing a The process useful Improvements raw mammal Extraction of l at or 7, 1919; Netherlands Norway June 13, Sweden May terial and oil may be gradually vegetable substances,

I and that the solvent is conveyed under extraction in treatment with the solvent,

Figure l of It has methods for fractional her. which may be material as separated conduit 9 devices 10 tor to the material and ct-lvely utilized because it ishe whole-of the arrangement pumped so that solvent are required for performing the operation. In addition thereto the receptacles after being emptied need not be removed from the chamber before their .tion into the work' trates an apparatus for use after being collected in the MATERIALS.

Patented Mar. 28, 1922. 390,951.

within the closed chamber in which the complete process is carried out.

upward direction, whereas the solvent is conveyed in the opposite direction only through the material of the u moving receptacles and in the same through the material in the downwardly moving receptacles. In this manner it .is likewise possible to attain agradual or stepwise extraction of the proportion the solvent \Vlll increase from receptacle to receptacle. The process has, in addition, the advantage that the apparatus for carrying it into effect occupies fat from the raw maof the fat contained in a relatively small area vent need only once be smaller quantities of the sol re-introducing.

the annexed drawings illusin a closed'chamhe open receptacles 4, 5, 6, 7, and 8 of any desired number, are

adapted to receive the material to be extracted, and are provided by means of rollers rails. They are inserted in the chamber by way of a sliding gate 1, and into the working after being hopper 2 which contains the raw material and is provided with a removable bot-tom.

he solvent which is supplied by way of a with sieve bottoms and are adapted to run on filled from the heated by means of heating trickles into the can of av distribudevice 11 in the form of a fine. spray on contained in are introduced I solvent emplo ed in the chamber are removed, throng pipes 16, condensed, and reintroduced into the chamber. The receptacle 8 which has traversed the whole of the process is discharged by a tipping action -w1th the aid of a turntable into the pit 14 and thereafter removed from the. chamber through the door 15. The remaining receptacles, with the material to be extracted oralready more or less extracted are then caused to advance into new positions by means of a push rod from the outside, and, an empty container re-introduced into the chamber.

In this manner the raw material is conveyed in opposition to the solvent by means of a portable container so that the fresh solvent introduced into the process is caused to ass first through the material reviously lixiviated which is thereby completely free from fat and withdrawn from treatment with the solvent, while the fat content of the solvent is progressively enriched from receptacle to receptacle, according to the amount of fat contained in the raw material.

After traversing the receptacle last supplied with fresh material the solvent is removed for further treatment.

Figure 2 of the annexed drawings illustrates the apparatus for carrying the process into effect wherein the raw material contained in the receptacles is first moved in a downward and then in an upward direction.

Arranged in the chamber 18' are receptacles 19 to 19 which are moved in the chamber in a cycle in the direction indicated by arrows. The solvent which is supplied by way of a conduit 20 first reaches the distributor 21 and then trickles through the material contained in the receptacles 19 to 19 The extract thus obtained is trapped in a collecting basin 22 whence it is pumped by means of a pump 24 through pipes 23 and 25 into the distributor 26. From the latter the liquid trickles through the material in i and withdrawn through the collection receptacle 27 and pipe 28.

The receptacle 19 which was first put into operation, isthen brought over the pit 30, discharged into the latter and then recharged -from the filling chamber 29, after which it is slid over the receptacle 19 and thereby reintroduced into the process. The

receptacles 19 to 19 are moved upwardly, the receptacle 19* takes the place of the receptacle 19*, and the receptacles 19 to 19* are then moved in a downward direction and so on.

I claim v 1. A process of extracting material to separate the soluble part from the insoluble part, which comprises providing a series of batches of the same material successively richer in the soluble constituent, percolat ng a solvent through each of such batches, a part of such'solventtreatment being successively in the order of increasing richness of the. said material, and a part of such treatment being in the reverse order, withdrawing batches of extracted material and adding batches of unleached material, while intermittently moving the artly extracted batches of material towar the incoming solvent, and maintaining the said batches separate from each other during the said treatment.

2. A process of extracting material to separate the soluble part from the insoluble part, which comprises providing a series of batches of the same material successively richer in the soluble constituent, percolating a solvent through each of such batches, a

part of such solvent treatment being successively in the order of increasing richness of the said material, and a part of such treatment being in the reverse order, withdrawing batches of extracted material and adding batches of unleachedmaterial,-while intermittently moving the partly extracted batches of material toward the incoming solvent, and maintaining the said batches separate from each other during the said treatment, all while moving the batches already largely extracted material contra to the direction of flow of the liquid in contact therewith, and while moving" the batches which have had only slight extraction in the same direction as the liquid in contact therewith.

3. A process of extracting material to separate the soluble part from the insoluble part, which comprises providing a series of batches of the same material successively richer in the soluble constituent, percolating a solvent through each of such batches, a

part of such solvent treatment being successively in the order of increasing richness of the said material, and a part of such solvent, and maintaining the said batches separate from 1 each other during the said treatment, while elevating a part of the batches of material which have been largely extracted, and while lowering another part of the batches of material which have been less extensively extracted, while flowing the solvent downwardly through both of said sets of batches.

In testimon whereof I afiix my signature.

ERMANN B'OLLMANN. 

